Improvement in pumps



l B, forming an annular valve chamber, a a,

' equivalent. The bottom piece, C, is arranged `pose of attaching thepump to any suitable 'ameters of which are generally small. For

i UNITED STATES PATENT OFFICE.

AASAHEL COOLEY, OF CHICAGO, ILLINOIS.

IMPROVEMENT iN PUMPS.

Specification forming part of LettersPatent No. 35,508, dated June l0,1862.

To aZZ whom it may concern:

Be it known that I, AsAHEL CooLEY, of Chicago, in the county of Cook andState of Illinois, have invented a new and useful Improved Double-ActingForcePump, theeonstruction and operation of which I hereby fully andaccurately describe, the accompanying drawings making a part of thisspecification. i

Figure l is a longitudinal elevation. Fig. 2 is a longitudinal section.Fig. 3 is `a transversesection in thelineb b. Fig. 4is aface view of thevalves c c and d d. Fig. 5 is` La transverse section of the piston inthe line ff. Fig. 6 is a transverse section of the piston in the line mm. Fig. 7 is atransverse' section of the piston iu the line v o. Fig. 8isna transverse section of the" piston in the line .fr x. Fig. 9 is atransverse section of the bottom piece, C, in the line h h.

The top piece, A, is attached to the cylinder which communicates with aseries of induction-passages, e ecce e, Fig. 3, over which is aring-valve, c c, `Fig. 4., or its mechanical with a seriesofinductionpassages, 0 0 o o o o, Fig. 9, over which is a ring-valve, dd, Fig. 4. It has also a'central bolt, g, for the puri'astening in thebottom of the well.

The piston E E is arranged with a series of passages, Z Z Z Z Z Z, Fig.5, communicating with an annular passage, r r, Figs. 2, 6, and 7, whichalso coinmuiliieates'by the passages s s s s s s, Figs. 2 and i8, and anannular passage, t t, Figs. 2 and 7, with a circular valve-chamber, a a,Figs. 2 'and 6. Within the valvechamber n a and-over the annular passaget t is a ringvalve,.i, Figs. 2 and 6, or its mechanical equi valent.

H, Figs. 7 and 8, is a central eductionport, which is closed by thevalve S or its equivalent. i

Attached to the piston and communicating with the valve-chamber n n is ahollow piston-rod, F, which passesloosely through the top piece, A, andis extended to the top of the well and attachedto a lever or any othersuitable device for working the pump.

The relative dimensions shown in the accompanying drawings adapt thepump to the capacity of bored or drilled Wells, the di-l ordinarypurposes it may be simplified by increasing the diameter at p p p p, sothat the passages e e e e e e may be made straight and vertical, inwhich case the bore of the cylinder may be extended to the valve-chamberct a.

Operation-When the piston is moved upward,.the `water flows through thepassages o o o o o o and the ring-valve d d, and iills the cylinderbelow the position, after which the passages o o o o o o are. closed bythe valve cZ (Z. When the movement of the piston is reversed, this Waterlifts valve S and passes through the port H and valve-chamber an, and isconducted through the piston-rod F to the top of the well. As the pistonmoves downward, the water ows through the passages Z Z Z Z Z Z, liftsvalve c c, and fills the cylinder above the piston, after which thepassagesZ Z Z Z Z Z'are closed by the valve c c, and as the movement ofthe piston is againreversed the water liows through the connectedpassages Z Z, r r, s s, t t, lifts the ring-valve t', passes through thesame, and is discharged through the piston-rod F, while the cylinder isagain filled below the piston, as before described. w

The pump may be worked slowly or rapidly without jar o r backflow ofwater, as the ports are all closed promptly by the weight of thecorresponding valves as the movement of the piston is reversed.

I claim- 1. The manner described of filling the cylinder above thepiston, to-Wit: by the Aemployment ofthe induction-ring valve c c,surrounding the Vbore of the cylinder at the top Vof the saine, theports e e e e e e of which bcstantially as described, when combined witha pump-cylinder, and a tubular piston-rod, F, for the purposes setforth.

ASAHEL COOLEY.

Witnesses:

R. B. BEIGGs, WILLIAM WALLACE.

